World

Africa

Vredendal Airport





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax121106114136146136
Tmin121110118139152147
Duration of sunshine000000
Precipitation121114127148165152
Humidity/Visibility908086101112104


ParameterJulAugSepOctNovDec
Tmax144144144146147150
Tmin146152145147148151
Duration of sunshine000000
Precipitation160159155157152163
Humidity/Visibility109109108109110111


Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured.

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